This infographic from Wordstream does a great job of showing a single day at the search engine giant.
5.6 Billion ad impressions a day is impressive but is actually down for the quarter.
However more people are clicking on ads than previously. These big number show how competitive the search markets really are and unfortunately if you do business in one of the top 10 verticals your advertising costs are going to be much higher.
© WordStream, an Ad Words partner.